Here you will find documentation and examples for the "Yet Another Dialog" tool for Linux. YAD allows one to can create GUI displays for command line and shell scripts. If YAD is not installed on your computer, or it is not in your software repository, you can download it from https://github.com/v1cont/yad.
Files with a .ncd extension can be opened using Notecase. If this application is not installed on your computer, or in your software repository, it can be downloaded at https://www.notecasepro.com